
/* digcalc.h */

#ifndef _DIGEST_INCLUDE_
#define _DIGEST_INCLUDE_

#define HASHLEN 16
typedef char HASH[HASHLEN];

#define HASHHEXLEN 32
typedef char HASHHEX[HASHHEXLEN+1];

#define IN
#define OUT

/* calculate H(A1) as per HTTP Digest spec */
void DigestCalcHA1(
	IN char * pszAlg,
	IN char * pszUserName,
	IN char * pszRealm,
	IN char * pszPassword,
	IN char * pszNonce,
	IN char * pszCNonce,
	OUT HASHHEX SessionKey
	);

/* calculate request-digest/response-digest as per HTTP Digest spec */
void DigestCalcResponse(
	IN HASHHEX HA1,			/* H(A1) */
	IN char * pszNonce,		/* nonce from server */
	IN char * pszNonceCount,	/* 8 hex digits */
	IN char * pszCNonce,		/* client nonce */
	IN char * pszQop,			/* qop-value: "", "auth", "auth-int" */
	IN char * pszMethod,		/* method from the request */
	IN char * pszDigestUri,	/* requested URL */
	IN HASHHEX HEntity,		/* H(entity body) if qop="auth-int" */
	OUT HASHHEX Response	/* request-digest or response-digest */
	);

#endif /* _DIGEST_INCLUDE_ */

